Question

Пож все уравнения буду благодарен даю 20 балов

Answer 1

Ответ:

$1) 8 - 3x = 8(1+x);\\\\8 - 3x = 8 + 8x;\\\\-3x - 8x = 8 - 8;\\\\-11x = 0;\\\\x = 0$

$2) 8(9+2x) = 5(2+x);\\\\72 + 16x = 10 + 5x;\\\\11x = -62;\\\\x = -\frac{62}{11};\\\\x = -5\frac{7}{11}$

$3) y - (7+y) = 12;\\\\y - 7 - y = 12;\\\\0y = 19$

Решений нет

$4) 7x - 3 = 10 + (7x -13);\\\\7x - 3 = 10 + 7x - 13;\\\\7x - 7x = 10 - 13 + 3;\\\\0x = 0$

x = любое число